careful with gutting 70´s-80´s emission gizmos.
most of that hinders performance. true; but you may want to keep the PCV in place in any case, and don´t junk the air pump - not yet at least.
there´s always good use for a belt driven air pump if your car probably can´t pass fed. smog tests- get a free flowing cat and hook the air pump to the converter inlet, or somewhere between the header collector and cat inlet. Incredible how many unburnt hydrocarbons can be cracked up in a hot exhaust and catalytic converter just by adding a lot of fresh air. Other than that, you additionally thin out the overall numbers of carbonmonoxydes.
Avoid using the original air pump inlets on the manifold close to the exhaust ports - the injected air will distract the straight shots of exhaust gasses, rendering all scavenging useless.
compared to the V8´s, our stock sixes are undercarbureted.
If you plan on keeping the stock carb (or any 1-barrel carb), give it some help by smoothing out the insides and shaving that ugly brass vent tube reaching far into the choke horn. make sure the choke plate is exactly 90° open when your engine has warmed up.
If you have access to a good quality vacuum gauge, check all vacuum ports available on your engine and use the one with the strongest signal for your distributor vacuum advance. If you have a dual vacuum advance canister (I doubt it), with membranes for both advance and retard, unplug the rear.
If you really want to dig in, get yourself a couple of springs for the mechanical advance (there are recurve and respring kits available, though I´d suggest scrounging the junkyards). Try the lightests springs first, then test for the harder ones. You´re looing for maximum advance around 2.300-2.500 rpm, whatever is to your liking.
Take her to test drives. Ideally you flat foot the pedal in the highest gear. Way unrealistic for daily driving, perfect for determining where detonation starts. Advance dizzy until you experience slight pinging, then turn it back a hair. with 92 octane fuel that should be around 15-17degrees.
Careful with the numbers I stated- my mind is pretty fuzzy at times.
please correct me if necessary.